Name:_________________________________________________Per.:______Date:____________________Assignment#:______

ChemistryUnitTestReviewCh.14:Gases

1. List3propertiesaboutgasesaccordingtothekineticmoleculartheory.

a. _______________________________________________________________________________________________

b. _______________________________________________________________________________________________

c. _______________________________________________________________________________________________

2. Statethegaslawsbelow:

Boyle’sLaw:

Charles’Law: Gay-Lussac’sLaw

CombinedGasLaw:

IdealGasLaw:

3. Considerasampleofgasinacylinderwithamoveablepiston.Assumingthatnogasislostor

gained(constantn),whatwouldhappento:

a. thegasvolumeifthepressureisincreased(atconstantT)?________________________________

b. thegasvolumeifthetemperatureisincreased(atconstantP)?________________________________

c. thegaspressureifthetemperatureisdecreased(atconstantV)?______________________________

4. Writetheunitsthatcorrespondtoeachofthefollowingvariables:

a. P:_________________________________

b. V:_________________________________

c. n:_________________________________

d. T:_________________________________

5. StateR(includingunits):____________________________________________

6. At195K,thepressureexertedbyoxygengasis754kPa.Whatwillthepressurebeat568Kassumingconstantvolume?

a. Statevariables:

b. Writeoutequationandthenisolateunknown:

c. Plug-inandsolve:

d. Finalanswer:

7. Ahelium-filledballoonhasavolumeof44.9Lat35°Cand42.6kPa.Whatvolumewillithaveat88.3kPaand10.0°C?

a. Statevariables:

b. Writeoutequationandthenisolateunknown:

c. Plug-inandsolve:

d. Finalanswer:

8. Convert456Lofgasat295.8kPatoit’snewvolumeatstandardpressure.a. Statevariables:

b. Writeoutequationandthenisolateunknown:

c. Plug-inandsolve:

d. Finalanswer:

9. Howmanygramsofchlorinegasarecontainedina30100mLtankat55°Cand204kPa?a. Statevariables:

b. Writeoutequationandthenisolateunknown:

c. Plug-inandsolve:

d. Finalanswer:

Ch.15:Mixtures1. Thediagrambelowrepresentsawatermolecule.Labeltheoxygenandhydrogenatoms.Also,

notethepartialcharges.

2. Onthediagrambelow,labelapolarcovalentbond,andthenlabelahydrogenbond.

3. Explainwhatthediagramsbelowarerepresentingandwhy:

PicA: PicB:

4. Explainhowaspidercanwalkonwater.

5. Definethefollowingtypesofmixtures: a. Solution

b. Suspension

c. Colloid

6. Youdissolvepotassiumchlorideintowatertoformanaqueoussolution.a. Whatisyoursolute?

b. Whatisyoursolvent?

7. Circlethetypesofmoleculesthatcandissolveinwater:a. Polarb. Nonpolarc. Ionic

8. Distinguishbetweentheterms“electrolyte”and“nonelectrolyte”.

9. FindthepercentbymassofwaterinNiCl26H2O.(Hint:firstfindthemolarmasses)

10. Identifytwopropertiesorbehaviorsofcolloids.

Ch.16:Solutions1. Youaretryingtodissolvesugarinwater.Listthreewaystocanspeedupthisprocess:

a.

b.

c. 2. WhatdoesHenry’sLawtellusaboutgassolubility?

3. Usethediagrambelowtoexplainthedifferencebetweensaturated,supersaturated,andunsaturatedsolutions.

4. Define“molarity”.

5. Calculatethemolarityof0.40molNaCldissolvedin1.6Lofsolution.Showallworkandunits.

6. Calculatethemolarityof20.2gKNO3in250.0mLofsolution.Hint:Checkyourunitsfirst.

7. CalculatethenumberofgramsofKOHneededtoprepare2.50Lofa3.0Msolution.

***Thispacketisnotacompletereview.Studyyournotesandtextbookcarefullytoprepareforyourtest.Practiceproblemsfromtheexamples.***